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    New device simplifies measurement of fluoride contamination in water

    Adding fluoride to water is common practice in a number of countries, including the U.S., Australia, Brazil, Malaysia, India and Vietnam. In low concentrations (below 1.5 mg/L), it can prevent tooth decay and even strengthen bones, but levels above that can have the opposite effect, causing serious dental and bone disease, especially in children and developing fetuses.

    from Phys.org - latest science and technology news stories http://bit.ly/2BGzLZj

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